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Tap water quality report

Rockhouse Mountain

EPA monitoring tested this supplier for 70 contaminants and detected 8. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

70
contaminants tested
8
detected
480
people served
76
health-based violations
New Hampshire rankingsLead in New HampshirePFAS in New Hampshire
Water source
Ground water
Ownership
Private
Counties served
Carroll

Compliance record

Formal violations the EPA has on file for this supplier. A health-based violation means a contaminant limit or a required treatment was breached; the rest are monitoring or reporting failures — still violations, but not a measured health risk.

76
health-based violations
148
violations on file
0
still open
ViolationTypeStatusPeriod
TT Health-based Resolved 2024-09-15
TT Health-based Resolved 2024-09-15
TT Health-based Resolved 2024-09-15
TT Health-based Resolved 2024-09-15
TT Health-based Resolved 2023-11-06
TT Health-based Resolved 2023-11-06
TT Health-based Resolved 2023-11-06
TT Health-based Resolved 2023-11-06
TT Health-based Resolved 2019-11-29
TT Health-based Resolved 2019-11-29

Other contaminants detected

Each bar shows the measured level as a share of the EPA limit: green is well under, amber is close to it, red is over. For lead and copper the limit applies to exactly the 90th-percentile figure shown, so red there means a real exceedance. For everything else the limit applies to a running annual average while the figure is the single worst sample on record — over 100% is worth reading, but is not by itself a violation. Formal violations are listed separately.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Combined Uranium
41.8996 µg/L 140%
of the EPA limit, in the worst sample — 30 µg/L
 37/39 SYR4 2014–2019
Copper
190 µg/L 15%
of the EPA limit 1300 µg/L
 29/31 SYR4 2015–2019
Arsenic
4 µg/L 40%
of the EPA limit 10 µg/L
 25/27 SYR4 2014–2019
Fluoride
4000 µg/L 100%
of the EPA limit 4000 µg/L
 18/18 SYR4 2016–2019
Barium
5 µg/L 0.3%
of the EPA limit 2000 µg/L
 6/6 SYR4 2016–2019
Combined Radium (-226 And -228)
2.9 pCi/L 58%
of the EPA limit 5 pCi/L
 6/6 SYR4 2014–2017
Gross Alpha, Excl. Radon And U
9.9 pCi/L 66%
of the EPA limit 15 pCi/L
 5/5 SYR4 2016–2017
Lead
3.2 µg/L 21%
of the EPA limit 15 µg/L
 4/25 SYR4 2015–2017
62 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane2,4,5-TP2,4-DAntimony, TotalAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalBromodichloromethaneBromoformChlorobenzeneCadmiumCarbofuranCarbon TetrachlorideChlordaneChloroformChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDibromochloromethaneDinosebDiquatEthylene DibromideEndrinEthylbenzeneGlyphosateHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorNitrateNitriteOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTTHMTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
VALERIE SHAE

Frequently asked questions about Rockhouse Mountain

Is Rockhouse Mountain tap water safe to drink?

EPA monitoring detected 8 contaminants in Rockhouse Mountain's water. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and the utility's annual Consumer Confidence Report for its official compliance status.

What contaminants were detected in Rockhouse Mountain's water?

EPA monitoring detected Combined Uranium, Copper, Arsenic, Fluoride, Barium, and others. The full list with the level and data source for each is above.

How many people does Rockhouse Mountain serve?

Rockhouse Mountain reports serving 480 people in New Hampshire, per its EPA record.

Has Rockhouse Mountain had any water quality violations?

The EPA has 148 violations on file for Rockhouse Mountain, of which 76 are health-based (a contaminant limit or required treatment was breached) and 0 remain open. The rest are monitoring or reporting failures.

Where does this data come from?

Every figure is official EPA drinking-water monitoring — the Lead & Copper Rule, the UCMR-5 nationwide testing program, and the EPA Six-Year Review — not our own testing. Each number is labelled with its source and period.